Liquid-fuel burner



, May 15, 1923. 1,454,975

F. MARTINDELL LIQUID FUEL BURNER Filed June 24, 1920 M? \\\\\x\ w Q i Si) z: Q

N. l. I N /ank Mari/nde!! y QQ JNVENTOR.

iwan/m@ ATTORNEY Patented May UNITED" STATES PATENT OFFICE.

FRANK MARTIN'DELL, OF BROOKLYN, NEW YORK, ASSIGNOR T0 THE ANTHONY- conrAN'Y, or LONG ISLAND cI'TY,

NEW YORK, A CORPORATION OF NEW YORK.

LIQUID-FUEL BURNER.

ApplicationVx led June 24, 1920. Serial No. 391,455.

To all wwm it may concern:

Be it known that I, FRANK MARTINDELL, a citizen of the United States, and a resident of Brooklyn, in the county of Queens and State of New York, have'invented certain new and useful Improvements in Liquid- Fuel Burners, of 'which the following is a specification. l, Y

This y invention relates to liquid fuel burners of the kind which are lself-contained that is burner-s which generate their own atomizing agents for even the heaviest liquid fuels.

It is one lof the objects of the invention to make one of these burners particularly applicable where no steam boiler, air compressor or air blower is available, even dispensing with the use of a fuel pump where the fire regulations do not prevent gravity flow.

Another object is to provide a liquid fuel burner with such safety devices as to make them particularly adapted for general hou-se heating inasmuch as the constant attendance of a ireman lcan beeliminated.\

Other objects of the invention are apparent in the following specifications, in which a preferred form of my burner is disclosed.

Principally stating, the burner is a com-.l steamV bination of a liquid fuel burner of the atomizing type and a steam generator. This generator is an'integral part of the burner and its sole purpose is to enerate steam for atomizing the liquid fuel 1n the burner.

' end of body-10 is plane of line 2-2 in Fig. 1.

The source of heat for generating the steam is the combustion of the liquid fuel as atomized by the steam. The burner and the stem generator form together a unit which is a self-contained steam' atomizing liquid fuel burner.

The invention is illustrated by means of the accompanying drawings in which- Fig. 1 is a vertical longitudinal sectional view through the burner; and Fig. 2 is a. cross-sectional view along the Like characters of reference denote similar parts throughout the several'views and the following specifications.

10 is a body of the burner. 11 is a tubular extension on one side of the body 10 threadedl to receive an oil pipe 12. The opposite provided with another extension 13 tapped on one side for a steam pipe 14. Extension 13 is further provided with a boss 15 to which is fastened an elon- "structure 35.

gated bowl 16. Centrally betweenextenslons 1 1 and 13, body 10 is extendedat 16 to recelve a screw bonnet17 into which a spindle 18can be reciprocated. 19 i-s a suitable hand wheel affixed to the outer end of spindle 18. The innermost end of spindle 18 is provided with a lon taper 20. 21 is a lsmall chamber surroun ing the spindle 18 just ahead of its tapered end 20 which is i.

adapted to .seat against the body`10 at 22. 23 1s a passage connecting the chamber 21 with the oil'supply pipe 12. 24 is a small orlice, controlled by tapered end 20 of spindle 18. Screwed into the body 10, opposite bonnet 17 and spindle 18, but in coaxial alignment therewith, is a plug 25. This plug is provided with a flange 26 to make a jolnt- -with body 19. 27 :is a threaded .part vof plug 25 to engage a correspondingly threaded portion within body 10. The part of the plug 25 which is located between flange 26 and threaded part 27 is ofareduced diameter at 28. 29 isa hollow central chamber of plug 25 into which terminates orifice 24. 30 is an outlet opening from chamber 29 through plug 25. 31 and 32 are ducts through the reduced portion 28 of the plug terminating in the central chamber-29 and so positioned as to impinge the circumference of the central chamber 29 tangentially as shown in Fig. 2. They are further slightly inclined towards the outlet end. 33 is an annular chamber in body 10 surrounding the reduced part 28 of plug 25. 34 is a duct through the body connecting the chamber 33 with the steam pipe 14. Extending from the body 10 in a direction oppositeto that of valve 18 is a hollow funnel-shaped Wound around this structure in coil form is the steam -pipe- 14, the extreme end of which is threaded at 36 to receive a suitable regulating valve 37.

The operation of the device is as follows:

Oil enters the burner through supply pipe 12.. Water -is admitted into steam pipe 14 by way of regulating valve 37. While passing through pipe 14 the water is converted into steam, which enters the burner body 10, and thence through' passage 34 and ducts 31 and 32 into the lmixing chamber 29 where it meets the oil which is admitted into this chamber through orifice 24. In chamber 29. the liquid fuel is atomized by the steam which 1s given a` whirlin motion due to the tangential direction of ille inlet orifices 31 and 32, and e'ected from the burner through outlet 30. T e atomized liquid fuel is then ignited and in passing through the funnel reason suchas too little air supply or excess` airl suppl ortemporary stoppage in .the oil line,- the liquid fuel wouldbe injectedinto the fire box or furnace and within a very short time.r would create agas'of high 'ex plosivecharacteristics. In the burner disclosed V,inl this.4 invention. should the burner o'out for any 4'reasonat all, the heat of comhustionwould'be `discontinuf'le'd and almost instantly the eneration of steam would stop, and water on y-would mix with the fuel. inside the burner. yThe resulting mixture can,- not be burned.

it is understood that various changes in the form, proportion and minor details 'of construction may be resorted to without de-v parting from the principle or sacrificing any of the advantages of the invention, as defined in the appended claims, sol for instance, while I have shown the steam to be injected into` the mixing chamber in a tangential manner, to thoroughly break up the oil and eject the same from the burner, this opening ma also be drilled straight at right angles to t e axis of the mixing chamber, inasmuch as the steam issuing therefrom would have such force and such expansive power that it would break up the oil into suiciently ne particles to burn it regardless of any centrifugal action. Furthermore while f have shown an open bowl in connection with the burner, for the purpose of burning liquid fuel in the same for starting the generation of steam this bowl may be entirely omitted, and the same result achieved by applying heat to the steam coil by means of an ordinary blow torch or other suitable devices.

.casing connecting the said'waterrpipe -witl f scribing witnesses.

What I claim as new, is l. In a steam generating liquid. fuel burner, the combination of a body'casing having a fuel supply connection, a 'discharge nozzle of substantially cylindrical shape screwed into the said body casing, they said nozzle having a cylindrical mixing chamber open'atonev end for the inlet of fuel, orifices at its side walls and aI small outlet opening,

a fuel regulating valvewithin the body cas-l ing and located between the saidifuellsupff' v ply connection land the said discharge nozzle,

a circularly coiled 4'pipe at the Voutlet` endof i .j

the burner havin one end coimected'tofaY valved water supp y and the other end-to theff fastened to the' body casing.

2. In a steam generating yliquid l fuel burner, the combination vof a 'body casing l" having a fuel connection at one. side and anM extension at the other side, a fuel regulating.. v valve interposed between the said sides, a j discharge nozzle' of substantially cylindrical i shape screwed into the said body casing, the:v

said nozzle having a cylindrical'.mixingi 80 the sidewalls of the saidfchamber and a t chamber open at one end, small orifices in smalloutlet opening, aperforated funnel shaped extension of ythe body casing at, the

outlet and in axial alignment with the ysaidv discharge nozzle, a water pipe coiled around the'said funnel shapedv extension of the body casing, having one end connectedto a suitable water supply'and theA other end fastenedto the extension of the body casingv opposite the fuel connection, a duct within the body` the'said small orifices of the discharge no zle, and an open panbelow the said wat pipe and fastened to the said ,body casing,f ,f

for the purpose specified.

In testimony whereof I have hereunto` my hand and seal in presence of two sub- FRANK MARTINDELL. Witnesses:

ALBERT W. MORSE,

MARY VAN DAM.

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